Micro concrete is a specialized high strength non shrink, free flow concrete used for strengthening, retrofitting & repair of structural and non-structural members of building columns, beam jacketing, slab & bridge repairing.It is supplied as a ready to use dry powder which requires only addition of clean water at site to produce a free flowing non shrink repair micro concrete. This is a cementitious material, with additives, which impart controlled expansion characteristics in the plastic state with reduced water demand.
It is designed for use in medium & large volume repairs. This is a cementitious material, with additives, which impart controlled expansion characteristics in the plastic state while minimizing water demand. This is specially designed for repairs to damaged reinforced concrete elements, particularly where areas are restricted and where vibration of the placed material is difficult.
Advantages:
Microconcrete s combination of cement, high quality graded fine aggregate, shrinkage compensating agents and dispersion agents in powder form marketed as dry powder in packets by construction chemical companies. This is to be mixed with a predetermined amount of water depending on the consistency sought – trowelable or pourable. Applied as repair mortar or to fill the crevices which cannot be done by conventional concrete. Its advantages includes
- Designed as a Ready mix factory packed & premixed product so consistent performance is guaranteed
- Shrinkage compensated
- Offers high initial strength & sustained long term strength & performance
- Fast drying
- Self flowable
- Can be pumped or poured into restricted locations
- Flow able mortar hence does not require compaction
- Develop high initial and ultimate final strengths
- Offers excellent resistance to moisture ingress
- Makes repaired sections highly durable
- Contains no chloride admixture. Rapid strength gain to facilitate early reinstatement
- Makes repaired sections highly durable
- Rapid strength gain to facilitate early reinstatement
- Can be pumped or poured into restricted locations
It is applied for Jacketing of RCC columns to increase load taking capacity (strengthening of a vertical member).
Conclusion
Micro concrete has been used in several applications in buildings and structures as it offers a durable, contemporary, and seamless finish.